Lubricating-oil.



' IfiPflRfEtY B. HODGE, DE LOS ANGELES, CALIFORNIA.

LUBRICATING-OIL.

N0 Drawing.

To all w'lm'm, may concern:

lie it known that I, HAnuY B. House. a citizen, of the llnited States, residing at 1.328 lit-id street. Los Angeles. in the county of Los Angeles and State of California, have 'invented uew and useful lnii'u'ore'mt-nts in Tmbricaiiug-Oils. of which the following is a specification.

..\'[y invention relates to a lubricant and especially to a lubricating oil having a fairly consistent viscosity throughout a wide range of temperature a lt is the object oi this invention to treat a lubricating oil: mineral or organic. whereby the viscosity thereof is maintained at high. tern pera tures. i

It is another object of this invention to treat a lubricating oil. wl'u-rehy the same will not lose its viscosity, even in cases where water is mixed therewith.

it is well known that the viscosity ordinary lubricating oil. is reduced as its temperature rises. A lubricating oil which is satisfactory when the lubricated parts of themachine are abnormal tenq'ieratures, becomes too fluid and of too little viscosity, when for any reason, the lubricated parts get hot, and for this reason the trouble of hearings and the like getting hot is aggravated. i V

I have discovered that with. my simple treatment of the lubricating oil the viscosity thereof can he maintained. throughi'iut a great range o'l temperature.

For this purpose I add finely powdered slippery elm hark to the lubricating oil to he treated. I

.l. have found. that 5% of an ounce of slippery elm hark per gallon. of oil gives excellent results.

Specification of Letters Patent.

Patented J1me 1.9, 191.7.

Application filed November 28, 1916. Serial No. 133,967.

Oil treated as described is especially suitable for cylinder oil and oil bearings of all kinds. As the heat expands the oil and reduces its viscosity, the powdered slippery elm bark which has been thoroughly dissem inated and mixed in the body of the oil .will expand and compensate the reduced viscosity of the oil by giving body thereto.

In cases where the steam cylinders leak, and steam or hot Water is mixed with my improved oil, the slippery elm bark will absorb the water and form a lubricating emulsion consisting of water and oil, answer ing excellently its purpose as a lubricator.

Oil treated as described has another advantage when used as cylinder oil in internal combustion engines. At the temperature prevailing in the combustion chamber of the engine, the slippery elm bark is burnt to ashes during any carbonization of the oil. rendering the carbon deposits light and fluffy and easily swept out through the ex haust, thus keeping the cyliuder and the spark plugs clean and insuring the positive functioning of the latter.

The proportion of the slippery elm bark to the oil may be increased or decreased as desired. As the proportion is increased the viscosity of the oil will be increased cor-respondingly.

I claim:

1. A lubricating oil consisting: of oil and powdered slippery elm bark in the proportion of oz. of said hark to a gallon of oil.

2. A. lubricating oil consisting of oil and powdered slippery elm bark. v

In testimony whereof I have signed my name to this specification.

HARRY B. [H )DGE. 

